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AssigneeVita Polymers Poland Sp. z o.o.
InventorKarolina Koszyk
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Invention refers to formulation for processing polyvinyl chloride plastisol by means of a photocrosslinking reaction, that is, for obtaining polyvinyl chloride plastisol and therefrom a PVC plastisol coating on a substrate using UV crosslinking of the surface. The invention also discloses a method for the photocrosslinking of plastisol. The present invention has a practical utility in manufacturing advertising materials, plastic gaskets, wallpaper, artificial leather, bouncy castles and the like. The composition—formulation for obtaining a photocrosslinked plastisol, according to the present invention, comprises three basic components: PVC—native resin or PVC&AC copolymer or PVC&PVAC copolymer; plasticiser mixture i.e. plasticiser known to contain phosphorus, diisononyl phthalate; photoinitiator: 2,4,6-trimethylbenzoyl diphenylphosphine oxide.
Formulation for obtaining a photocrosslinked plastisol comprising a vinyl chloride polymer (PVC) and at least one plasticizer, characterised in that it comprises a native form of PVC in resin form or copolymer of vinyl acetate PVC&AC or copolymer of vinyl chloride and acrylic PVC&PVAC, plasticizer mixture comprising a phosphorus and a diisononyl phthalate, and additionally photoinitiator in the wavelength range from 365 nm to 400 nm, preferably up to 395 nm being a 2,4,6-trimethylbenzoyl diphenylphosphine oxide, wherein the total weight ratio of the plasticisers mixture being from 35.14 wt % to 38.24 wt % of the total formulation, while the quantitative content of the total weight of PVC polymer being from 54.05 wt % to 58.82 wt % of the total formulation and the quantitative content of the photoinitiator being from 2.94 wt % to 10.81 wt % of the formulation.
Method for obtaining photocrosslinked PVC plastisol using native PVC and therefrom a coating applied to a surface using the described formulation comprising the described below steps.
Method for obtaining plastisol formulation for photo-crosslinking, comprising mixing vinyl chloride polymer (PVC) and one or more plasticisers, characterised in that the method comprises the step of mixing a photoinitiator in the wavelength range of 365 nm to 400 nm, preferably up to 395 nm being 2,4,6-trimethylbenzoyl diphenylphosphine oxide, preferably in rub form, in an amount of 2.94 wt % to 10.81 wt %, calculated on the total formulation, with a phosphorus-comprising plasticiser in an amount of 8.11 wt % to 8.82 wt %. as a proportion of the total formulation with plasticiser comprises phosphorus in an amount of from 8.11 wt % to 8.82 wt % of the total, followed by the addition of PVC in native form which is a resin or vinyl acetate copolymer PVC&PVAC or vinyl chloride-acrylic copolymer PVC&AC in an amount of from 54.05 wt % to 58.82 wt % by weight of the total formulation and addition of a plasticiser being diisononyl phthalate in an amount ranging from 27.03 wt % to 29.41 wt % by weight of the total formulation and then mix it.
Dependencies are inferred from the claim text.